[taxcontrol]

The second portion gives the U.S. Government the authority over military installations

No, that is NOT what is said in the second portion. The EXACT LANGUAGE is: " ... exercise like Authority over all Places ..." All places is NOT limited to military installations.

[ponygirl]

Spoken like a true defender of the "penumbras" so imagined in the Constitution.

I have been researching this since last night, and in every instance it is accepted that this language is referring specifically to military installations.

You are not defending the words of the Constitution. You are defending those who have twisted and manipulated the meaning of those words.